./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ..................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ............................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:08:25,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:08:25,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:08:25,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:08:25,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:08:25,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:08:25,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:08:25,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:08:25,122 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:08:25,122 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:08:25,123 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:08:25,123 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:08:25,124 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:08:25,125 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:08:25,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:08:25,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:08:25,127 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:08:25,128 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:08:25,130 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:08:25,131 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:08:25,132 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:08:25,133 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:08:25,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:08:25,135 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:08:25,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:08:25,136 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:08:25,137 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:08:25,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:08:25,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:08:25,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:08:25,140 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:08:25,140 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:08:25,140 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:08:25,140 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:08:25,141 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:08:25,142 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:08:25,142 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-27 00:08:25,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:08:25,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:08:25,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:08:25,155 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:08:25,155 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:08:25,155 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:08:25,155 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:08:25,155 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:08:25,156 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:08:25,156 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:08:25,156 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:08:25,156 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:08:25,156 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:08:25,157 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:08:25,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:08:25,158 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:08:25,158 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:08:25,158 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:08:25,158 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:08:25,158 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:08:25,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:25,159 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:08:25,159 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:08:25,161 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:08:25,161 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:08:25,161 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:08:25,162 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:08:25,162 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:08:25,162 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-10-27 00:08:25,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:08:25,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:08:25,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:08:25,201 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:08:25,202 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:08:25,202 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-10-27 00:08:25,250 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/8ec59fc61/e938c82bc4d24f19b4dc6da405d676ad/FLAGf54ff0d46 [2018-10-27 00:08:25,581 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:08:25,582 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-10-27 00:08:25,587 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/8ec59fc61/e938c82bc4d24f19b4dc6da405d676ad/FLAGf54ff0d46 [2018-10-27 00:08:25,599 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/8ec59fc61/e938c82bc4d24f19b4dc6da405d676ad [2018-10-27 00:08:25,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:08:25,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:08:25,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:25,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:08:25,608 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:08:25,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f0132f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25, skipping insertion in model container [2018-10-27 00:08:25,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:08:25,633 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:08:25,737 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:25,740 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:08:25,751 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:25,759 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:08:25,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25 WrapperNode [2018-10-27 00:08:25,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:25,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:25,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:08:25,760 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:08:25,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:25,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:08:25,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:08:25,778 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:08:25,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... [2018-10-27 00:08:25,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:08:25,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:08:25,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:08:25,794 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:08:25,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:08:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:08:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:08:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:08:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:08:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:08:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:08:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 00:08:26,076 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:08:26,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:26 BoogieIcfgContainer [2018-10-27 00:08:26,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:08:26,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:08:26,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:08:26,080 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:08:26,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:08:25" (1/3) ... [2018-10-27 00:08:26,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393ac491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:26, skipping insertion in model container [2018-10-27 00:08:26,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:25" (2/3) ... [2018-10-27 00:08:26,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393ac491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:26, skipping insertion in model container [2018-10-27 00:08:26,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:26" (3/3) ... [2018-10-27 00:08:26,084 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-10-27 00:08:26,092 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:08:26,097 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:08:26,109 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:08:26,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:08:26,136 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:08:26,136 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:08:26,137 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:08:26,137 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:08:26,137 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:08:26,137 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:08:26,137 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:08:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-10-27 00:08:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 00:08:26,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:26,156 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:26,158 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:26,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-10-27 00:08:26,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:26,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:26,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:26,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:26,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:08:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:08:26,264 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:08:26,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:08:26 BoogieIcfgContainer [2018-10-27 00:08:26,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:08:26,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:08:26,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:08:26,287 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:08:26,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:26" (3/4) ... [2018-10-27 00:08:26,293 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 00:08:26,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:08:26,294 INFO L168 Benchmark]: Toolchain (without parser) took 691.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:26,297 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:26,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.81 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:26,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.88 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:26,300 INFO L168 Benchmark]: Boogie Preprocessor took 15.45 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:26,301 INFO L168 Benchmark]: RCFGBuilder took 282.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:26,301 INFO L168 Benchmark]: TraceAbstraction took 208.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:26,302 INFO L168 Benchmark]: Witness Printer took 6.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:26,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.81 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.88 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.45 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 282.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 208.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:08:28,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:08:28,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:08:28,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:08:28,135 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:08:28,136 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:08:28,137 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:08:28,138 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:08:28,140 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:08:28,141 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:08:28,141 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:08:28,142 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:08:28,142 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:08:28,144 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:08:28,145 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:08:28,145 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:08:28,146 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:08:28,148 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:08:28,149 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:08:28,150 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:08:28,151 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:08:28,152 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:08:28,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:08:28,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:08:28,155 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:08:28,155 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:08:28,156 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:08:28,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:08:28,157 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:08:28,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:08:28,158 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:08:28,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:08:28,160 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:08:28,160 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:08:28,161 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:08:28,161 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:08:28,161 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-27 00:08:28,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:08:28,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:08:28,173 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:08:28,173 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:08:28,173 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:08:28,174 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:08:28,174 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:08:28,174 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:08:28,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:08:28,174 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:08:28,175 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:08:28,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:08:28,176 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:08:28,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:08:28,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:08:28,176 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 00:08:28,176 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 00:08:28,177 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:08:28,177 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:08:28,177 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:08:28,177 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:08:28,177 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:08:28,177 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:08:28,177 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:08:28,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:28,178 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:08:28,178 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:08:28,178 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:08:28,178 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-27 00:08:28,178 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:08:28,178 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 00:08:28,179 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 00:08:28,179 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-10-27 00:08:28,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:08:28,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:08:28,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:08:28,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:08:28,224 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:08:28,226 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-10-27 00:08:28,267 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/60ec4ecc3/11c1932aaf454da5be71ead50b8f76c2/FLAG0d6815b68 [2018-10-27 00:08:28,630 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:08:28,631 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-10-27 00:08:28,637 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/60ec4ecc3/11c1932aaf454da5be71ead50b8f76c2/FLAG0d6815b68 [2018-10-27 00:08:28,650 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/data/60ec4ecc3/11c1932aaf454da5be71ead50b8f76c2 [2018-10-27 00:08:28,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:08:28,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:08:28,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:28,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:08:28,662 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:08:28,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f662ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28, skipping insertion in model container [2018-10-27 00:08:28,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:08:28,692 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:08:28,817 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:28,823 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:08:28,838 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:28,852 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:08:28,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28 WrapperNode [2018-10-27 00:08:28,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:28,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:28,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:08:28,853 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:08:28,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:28,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:08:28,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:08:28,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:08:28,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:08:28,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:08:28,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:08:28,900 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:08:28,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:08:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:08:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:08:28,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:08:28,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:08:28,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:08:28,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:08:28,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 00:08:29,868 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:08:29,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:29 BoogieIcfgContainer [2018-10-27 00:08:29,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:08:29,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:08:29,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:08:29,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:08:29,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:08:28" (1/3) ... [2018-10-27 00:08:29,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634bb269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:29, skipping insertion in model container [2018-10-27 00:08:29,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28" (2/3) ... [2018-10-27 00:08:29,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634bb269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:29, skipping insertion in model container [2018-10-27 00:08:29,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:29" (3/3) ... [2018-10-27 00:08:29,877 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-10-27 00:08:29,885 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:08:29,890 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:08:29,902 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:08:29,925 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:08:29,925 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:08:29,925 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:08:29,926 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:08:29,926 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:08:29,926 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:08:29,926 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:08:29,926 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:08:29,926 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:08:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-10-27 00:08:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 00:08:29,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:29,946 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:29,948 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:29,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-10-27 00:08:29,956 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-27 00:08:29,957 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-27 00:08:29,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:08:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:08:30,122 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:08:30,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:08:30 BoogieIcfgContainer [2018-10-27 00:08:30,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:08:30,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:08:30,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:08:30,173 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:08:30,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:29" (3/4) ... [2018-10-27 00:08:30,175 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 00:08:30,238 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c2094ee4-9463-4db7-b354-67eff6754428/bin-2019/utaipan/witness.graphml [2018-10-27 00:08:30,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:08:30,239 INFO L168 Benchmark]: Toolchain (without parser) took 1583.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:30,240 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:30,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.34 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:30,241 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.96 ms. Allocated memory is still 1.0 GB. Free memory is still 941.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:30,241 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:30,242 INFO L168 Benchmark]: RCFGBuilder took 969.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 935.8 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:30,242 INFO L168 Benchmark]: TraceAbstraction took 303.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:08:30,243 INFO L168 Benchmark]: Witness Printer took 65.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:08:30,247 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.34 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.96 ms. Allocated memory is still 1.0 GB. Free memory is still 941.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.52 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 969.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 935.8 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 303.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Witness Printer took 65.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...